Improvement in



GL E. COOPER. Gutting-Bpar'a s" for Sh0em'akers, &c.

' vPatented July 831 813 Fi i/R mare;

* UNITED STATES PATENT OFFICE.

CHARLES E. COOPER, OF PHILADELPHIA, PEXXSYLVANIA.

IMPROVEMENT lN -CUTTll \lG-BOARDS FOR SHOEMAKERS, &c.

Specification forming part of Letters Patent No. 140,680, dated July 8, 1873; application filed April 21, 1873.

To all whom it may concern:

. Be it known that I, CHARLES E. Goo'rsn, of the city and county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in CuttingBoards;

and I do hereby declare the following to be aclhar and exact description of the nature thereof, suiticient to enable others skilled in the-art 'to which my invention appertains to fully understand, make, and use the same, reference being had to the accompanying drawings making part of this specification, in

which-- Figure 1 is a top or plan view of the device embodying my invention. Fig. 2 is a side view thereof in line x .1, Fig. 1. Fig. 3 is an end view.

. Similar letters of reference indicate corre sponding parts in the several figures.

This iir'ention relates to a cutting-board -which is designed for the use of shoeniakers,

saddlers,.and others, and composed of a number of strips or blocks of wood secured together with the grain exposed or forming the surface; and the invention consists in means for preventing warping or twisting of the board.

teferring to the drawings, A represents a cutting-board, which is constructed of a number of strips or blocks of wood, 0- a, which are permanently secured to each other, and having their grain onthe outside so that the ends of the grain form the cutting-surfaces of the board. A frame, B, is placed around the sides and ends of the arranged blocks so as to protect the latter and stiffen the board.

It will be seen that aboard of thisconstruc tion will wear quite slowly, since the grain ends of the wood are presented to theknives,

. and it'requircs but seldoniplaning or levelin g, and may therefore be made thin and light. In the board thus stated there is, however, a liability to twist or warp atpoints along the lengths of the strips or blocks, and thereby damage or materially effect; the board. 'lo' prevent this the inner sides of the blocks are grooved transversely so that the grooves of the blocks form channels for the reception of tongues C O, which are completely embedded in the board, and break thejoints of adjacent;

blocks, since each tongue occupies both grooves of said adjacent blocks.

g It. is desirable thatthe grain of the tongues shallbe the ends thereof, or at right angles to that of the blocks A, which ends are consequently exposed at; the sides of the blocks,.;

1t will be seen that theinterpositionpf thetongues stitfens the body of the board, and resists the tendency of the blocks to warp or twist. l

l am aware that a cutting-board has been formed in sections, and the same inclosed by rods or'lrinnc-work, but there is no provision therein to prevent warping or twisting of the board inside of theparts surrounded by the frame; I therefore lay no claim to such 001v .struction; but Y tongues C arranged with their grain extend-1 ing at an angleto that of the blocks, when combined and operating substantially as and for the purpose set forth.

The above signcd'by me .this 19th day of April, 1873. CHARLES E; COOPER.

Witnesses:

JOHN A. TYIEDERSIIEIM, MILLARD F. WALTON. 

